From USCIS
The current I-9 form lists an expiration date of 6/30/09. However, the U.S. Citizenship and Immigration Services (USCIS) announced that the form will remain valid after this date.

On June 26, USCIS asked the Office of Management and Budget (OMB) to approved continued use of the current version. While the request is pending, the form will not expire, despite the date listed at the top of the first page. When the extension is approved — and a new expiration date is set — USCIS will update the form. For the time being, continue to use the form dated “Rev. 02/02/09″ at the bottom of each page and the June 30 expiration date at the top.

Note: When the form is updated by USCIS, Staff One will update the form provided to its clients at that time.